This seems to be a common fault & very hard to find a replacement powerboard- & some places have refurbished powerboards & want extortionate money- for a tv this old its not really worth it-
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I have sansui television 42"model number STY0342, plasma 3D.when l turn it on sometimes it takes time to switch on after turning it on.it will change the standby light to blue.what might be the problem.
Check this link to know the cost and availability of the power supply board to your TV. It will be best to replace it as card basis. The power supply regulator board is faulty.
There are so many resons for a plasma TV to shut down . It might be due to a faulty main power supply section. Main digital section fault. Y-Sustain fault. These are the common faults to plasma shut down. You have to locate the exact faulty board. There is normally no repair to these boards. Card base replacement should be done. Get into this site, and read articles related to plasma tV repair. there are so many faults and rectification proceedings described in detail. Read them and make sure that you can do this work by yourself; and proceed. Type in 'electronics help online.blogspot' to your browsers search box, click open the site named Electro-help for details.
The fuse you have replaced would have been on the sustain board, now that it clicks indicates a problem either with the control board or the sustain board. You would need to disconnect the connector from the power board to the Y-sustain board (left of power board) to check if the Vs & Va voltages are present, if so then the power supply will be working ok & the problem will be with the previously mention boards. There is the possibility that the plasma display screen could also be faulty.
Hi Paul,
This seems to be a common issue in most of the plasma flat screens. You are almost accurate in guessing the reason of trouble. The issue with the TV is mainly with the power board itself which happens in most models. Even though if you try replacing board level components you will finally end up in replacing the power board for sure. I managed to find a contact who can help with spare parts of most of the plasma models...i am posting it here for your reference.
plasma TV parts-- Steve Hu: [email protected] . Have a nice day!!!!
My experience with 42" plasma tv's with no picture or sound was a missing power supply voltage. On the power supply board check voltages on the plug. The voltages should be marked on the board,
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